My Robot

YOU NEED :

 - 1x ARDUINO UNO
 - 1x TAMIYA UNIVERSAL PLATE SET
 - 1x TAMIYA TRACK & WHEEL SET
 - 1x TAMIYA MOTOR GEARBOX
 - 1x L298 Dual H-Bridge Motor Driver
 - 1x 9g Servo
 - 1x Ir Sharp Sensor
 - Plexiglass
 - 1x SPDT Switch
 - Some Wires
 - Hot Glue Gun
 - 3x 9 v Battery
 - 1x Test PCB
 -1x L0875
 -1x 1uf capacitor
 -1x 10uf capacitor



Arduino Code:

 #include

Servo MS;
int a = 4;
int b = 5;
int c = 6;
int d = 7;
int x;
int pos = 0;

void setup()
{
  Serial.begin(9600);
  pinMode(a,OUTPUT);
  pinMode(b,OUTPUT);
  pinMode(c,OUTPUT);
  pinMode(d,OUTPUT);
  MS.attach(3);
}

void loop()
{
  int S;
  int F;
  int D;
 
  int sensorValue = analogRead(A2);
  float vol = sensorValue * (5.0 / 1023.0);
  Serial.println(vol);
 
 
 
    
    
 
 
 
  if(vol >= 0.7)
     {
        MS.write(0);
        pos = 0;
        delay(500);
        Serial.println(pos);
       
        MS.write(90);
        pos = 90;
        delay(500);
        Serial.println(pos);
       
        MS.write(180);
        pos = 180;
        delay(500);
        Serial.println(pos);
       
        MS.write(90);
        pos = 90;
        delay(500);
        Serial.println(pos);
       
        if(pos == 0 && vol >= 0.7)
        {
          S = 1;
        }
       
        if(pos == 0 && vol <= 0.7)
        {
          S = 0;
        }
       
        if(pos == 90 && vol >= 0.7)
        {
          F = 1;
        }
       
        if(pos == 90 && vol <= 0.7)
        {
          F = 0;
        }
       
        if(pos == 180 && vol >= 0.7)
        {
          D = 1;
        }
       
        if(pos == 180 && vol <= 0.7)
        {
          D = 0;
        }
       
        if(S == 0 && F == 1 && D == 1)
        {
           digitalWrite(a, HIGH);
           digitalWrite(b, LOW);
           digitalWrite(c, LOW);
           digitalWrite(d, HIGH);
        }
       
        if(S == 1 && F == 0 && D == 1)
        {
           digitalWrite(a, LOW);
           digitalWrite(b, LOW);
           digitalWrite(c, LOW);
           digitalWrite(d, LOW);
        }
       
        if(S == 1 && F == 1 && D == 0)
        {
           digitalWrite(a, LOW);
           digitalWrite(b, HIGH);
           digitalWrite(c, HIGH);
           digitalWrite(d, LOW);
        }
       
        if(S == 1 && F == 1 && D == 1)
        {
           digitalWrite(a, HIGH);
           digitalWrite(b, LOW);
           digitalWrite(c, HIGH);
           digitalWrite(d, LOW);
        }
       
         Serial.println(S);
         Serial.println(F);
         Serial.println(D);
     }
    
     if(vol <= 0.7 )
     {
       MS.write(90);
     
      digitalWrite(a, LOW);
      digitalWrite(b, HIGH);
      digitalWrite(c, LOW);
      digitalWrite(d, HIGH);
     
   }
 

 
 
}



Pin conecttion :

L298N :

 -pin 1, 8, 15 to gnd arduino and to 9v battery anode;
 -pin 2, 3 to motor 1;
 -pin 13, 14 to motor 2;
 -pin 4, 6, 9, 11 to battery cathode
 -pin 5, 7, 10, 12 to arduino digital pin (digital pin 4, 5, 6, 7 );

Servo :
  
-gnd to arduino gnd;
-red wire to 5v arduino;
-white wire (signal) to digital pin 3 arduino;

IR Sharp Sensor :

-gnd to arduino gnd;
-red wire to 5v arduino;
-white wire (signal) to analog pin A2 arduino